Combining Modern C++ and Lua
summary
Describes a deployed architecture that moves a monolithic C++98 connection manager to C++17 actions + Lua 5.3 behaviors, using SWIG type maps to map std::string/vector/map and to pass Lua callbacks into std::function. Example code (luachat on GitHub) uses asio timers and TCP with one asynchronous TCP connection per message, speedylog for logging and CMake for builds. Field use on Blu Wireless train radios proves it allows live behavior changes without recompiles and speeds up fixes from week-long builds to monthly supported releases.
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chapters (30)
- 0:00Introduction
- 0:50Agenda
- 2:05Software Philosophy
- 4:10Example
- 4:40Plea Wireless
- 6:18Train radios
- 7:20Train environment
- 8:28Connection management
- 10:57Decoupled architecture
- 12:53Architecture diagram
- 14:20Questions
- 15:03What is Lua
- 17:23Lua Stack
- 18:50First Example
- 24:18LuaChat
- 27:18LuaChat Example
- 27:53Lua Architecture
- 28:44Swig
- 31:08Swig Input
- 33:11Macros
- 34:35Types
- 35:50Type Checks
- 40:30Lua Actions
- 43:28asynchronous messages
- 45:00accept
- 46:44asynchronous read
- 49:17get
- 49:37lower behavior
- 53:40code overview
- 54:01sender code
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